A method may include receiving or retrieving session information associated with one or more electronic communications that occurred outside of the social network site and included users of the social network site, comparing the session information with information associated with the users of the social network site, selecting one of the users as a user of the social network site and one or more of the users as one or more connections of the selected user of the social network site, based on the comparing, generating a weighted social graph for the selected user of the social network site, based on the session information, generating social network information based on the weighted social graph, and providing the social network information to at least one of the selected user of the social network site or the selected one or more connections of the user of the social network site.